| Delphi City Hall | |
| Nrhp Type: | cp |
| Nocat: | yes |
| Location: | 105-109 Washington St., Delphi, Indiana |
| Coordinates: | 40.5867°N -86.6739°W |
| Built: | , 1881 |
| Architecture: | Italianate |
| Added: | December 17, 1998 |
| Area: | less than one acre |
| Refnum: | 98001525 |
Delphi City Hall, also known as the Assian-Ruffing Building and Old City Hall-Opera House, is a historic city hall located at 105-109 Washington Street in Delphi, Indiana. It was built in 1865, and is a three-story, Italianate style red brick building. The third floor was remodeled for use as an opera house in 1881. The building was damaged by a fire in December 1914 and the third floor has remained vacant since.[1]
It was listed on the National Register of Historic Places in 1998. It is located in the Delphi Courthouse Square Historic District.